Has anyone concieved while using Miena IUD?

Some strange preg like symptoms have popped up in the last 2 weeks, and while i seriously doubt im pregnant, i have heard of people falling pregnant with one, just dont know anyone who has, personally.

I have had it for 9 months and bled for almost the whole time, over that period i have only ever been a max of 4 days between periods, but all of a sudden it has stopped, about 4-5 weeks ago, i had light bleeding for 2 days and nothing since. Which has actually been great! But i have heard of the risks of actually getting preg with it there, to the bub. I have been getting bad headaches and heartburn/indigestion, constantly tired and eat non stop, plus sore back/sort of period pain feeling, which were all symptoms that started early on for me with my pregnancies.

I dont really know what to think, Could it just be hormones now that my body finally may be adjusting to it?

I will probably do a test just to rule it out, but DH is away working so i would rather tell him whats going on before going out and doing it.